Load-handling apparatus.



emmsnm. LUAD HANDLING APPARATUS.

APPLICATION FILED JAN. II IQIE.

W mm r m m; n 0% e v m n I P G. KELLGREN.

LOAD HANDLING APPARATUS.

APPLICATION man m4. 1!. I916.

Patented Oct. 16,1917.

4 SHEETS-SHEET 2.

Imini/orr awsiqffi'ltyrem G. KELLGREN.

LOAD HANDLING APPARATUS.

APPLICATION FILED m: n. I916.

Patnted 001;. 16,1917.

4 SHEETS-SHEET 3- Inventor. t'usiad' K0153 ran,

G. KELLGREN.

LOAD HANDLING APPARQTUS.

APPLICATION HLED IMLH. 1M6.

1,243,074. Patented Oct. 16, 1917.

4 SHEETS-SHEET 4.

position GUSTAF KELLGREN, OF EVERETT, MASSACHUSETTS.

LOAD-HANDLING APPARATUS.

Specification of Letters Patent.

Patented Oct. 16, 1917.

Application filed Januarxli, 1916. Serial No. 72,452.

To all whom it may concern.

Be it known that 1', GUSTAF KnLLonnN, a citizen of the United States, and a resident of Everett, county of Middlesex, and State of Massachusetts, have invented an Improves ment in Load-Handling Apparatus, of which the following ,description, in connection with the accompanying drawings, is a specification, like characters on the drawings representing like parts.

This invention relates to load handling apparatus, in general, and more particularly to dumping vehicles, and in certain aspects may be considered an improvement on the apparatus disclosed in my co-pending earlier application, filed June 7, 1913 Patent No. 1,168,811, dated January'18, 1916.

The objects and features of the invention will be best understood from the following description, taken in connection with the accompanying drawings, of a vehicle cm bodying one form of my invention selected for the purpose of illustration, it being undcrstood that the invention in its true scope is definitely set forth by the claims.

In the drawings:

Figure 1 is a side elevation of a dumping motor vehicle embodying one form of the invention Fig. 1 shows an illustrative form of clutch mechanism for connecting and disconnecting the drive shaft of the motor with the hoisting or dumping mechanism.

Fig. 2 is a longitudinal sectional elevation onion enlarged scale of the right-hand portion of the vehicle shown in Fig. 1, illus- (rating more particularly the tilting or lifting mechanism with the body in its lowered Fig. 3 is a longitudinal sectional; elevation on an enlarged scale showing the lifting or tilting mechanism with the body in raised or tilted position; v

Fig. 4 is a view on an enlarged scale of the lifting or tilting mechanism viewed from the left of Fig. 3, certain parts being shown in section.

In" the drawings, the invention is shown in its application to adumping motor-vehicle, but it will be apparent that as to oer-j tain of its features it is susceptible of a variety of other applications without departin from the spirit of the invention.

The chassis of the vehicle/may be of any usual suitable construction, including }the usual longitudinally and transversely disby which the drive shaft may be disconnected from and connected to the crank shaft of the engine may be of any suitable and usual construction and'inode of operation and will therefore not be described, they being in any suitable location.

The fixed frame of the machine, rigidly secured in any suitable manner to the chassis, may be of any suitable and usual construction, said frame herein comprising two side frame members fastened onto the longitudinal chassis side members, one of said side frame members being indicated in Fig. 1 by 12, secured to the chassis side member 2 by bolts 6, 6. To these members 12 are secured transverse members 14, as by bolts 8. Upon these transverse members 14:. are secured the fixed longitudinal side frame members 10, 10, by bolts or any other suitable fastening means. Mounted in suitable bearings 17 upon the longitudinal side member 12 and transverse member 13, Fig. 1, is a transverse shaft 16 provided upon one end with a sprocket Wheel 18. This transverse shaft will preferably be driven from the drive shaft 20 of the vehicle through gears 22, 24- and suitable clutch comprising the clutch members 26, 28 and operating lever 30 therefor. All these parts may be of any suitable construction and mode of operation and need not be herein more fully de scribed. The sprocket wheel 18 drives a second sprocket wheel 32 through a sprocket chain 34, said second sprocket Wheel 32 being mounted upon a stud shaft 36'journaled in bearings provided on one of the longitudinal side frame members 10. Also mounted upon the stud shaft 36 is a drum 38 anda pinion 40 which latter meshes with a gear 42 mounted upon a stud shaft 44 jour-' naled in a bracket 46 and said longitudinal side member 10, said bracket being secured to said side member in appropriately spaced relation thereto, in any suitable manner as by bolts 48, one of :which is shown in Fig. 1. A hand brake 50 operated by a hand lever 52 may be provided to cooperate with the drum 38 to control the downward swinging movement of the body when the latter is lowered. Connected to the gear 42 and doncentric therewith is a pinion 54 which meshes: with a gear 56 mounted upon ashaft 58 extending transversely of the machine and journaled in suitable bearings 19 provided in the side frame members 10, 10. This shaft 58 forms part of the actual lifting or tilting mechanism which in the embodiment of the invention herein described for illustrative purposes may be constructed as follows. To points adjacent each end of said shaft 58 are secured traction members, herein chains 60, said chains extending toward the rear end of the machine, Fig. 2, where they pass under and around sheaves 62 mounted for free rotation in brackets 64 bolted to the rear or right-hand transverse frame member 14, v iewingFi 2. After passing over said sheavesrthe chains 60' extend toward the front ofithe machine and are connected at their front ends to the ,free

ends of the levers 70, 70, preferably b -turnbuckles 66 secured to a shaft 68 Whic joins the free ends'of two lifting arms 70, 70, as shown in Fig. 4. The turn-buckles embrace the shaft 68 loosely enough to permit relative rotation of the rod fund turn-buckles. Said lifting arms 70, 70 are pivoted at one end at 74 between the upturned wings of two angle iron 73, 75, bolted by their horizontal wings to one of the cross members 14, 14. Said arms 70, 70 carry rolls 76 at their free ends. Preferably, said lifting arms will be angular in shape, as clearly shown in Figs. 2 and 3, and will be joined at their elbow or angular portions by a transverse rod or shaft 78 upon the reduced end portions of which are preferably loosely mounted flanged rollers 80, between the arms 70, 70 and the shoulders formed on said shaft by said reduced end portions. The said reduced end portions extend through the arms 70, 70, which are mounted for free rotation thereon, and also support for free rotation, outside of said arms 70, 70 and spaced from the latter by washers 82, a second pair of shorter lifting arms 84. Those lifting arms 84 are preferably also angular in shape and consist preferably each of two arm members. Between the two nicmbers forming each of the urms 84 there may be mounted for free rotationupon said shaft 78 a roller 83, see Fig. 2, similar in function to the rollers 76. Between the right-hand ends, viewing Fig. 2, of the two arm members forming ouch of the shorter liftinguirms 84, is pivoted at S one end of an arm 88, the other cndsof said arms 88 being, pivoted respectively at 90 to two angle irons 92, U2, pivoted at their right-hand ends, Fig. 2, to the side frame members 10, respectivclv, at 94 and nornnilly'rusting at their left-hand ends, Fig. 2, upon a transverse block 21, secured at both ends upon the frame members 12., i2 when the lifting mechanism is collapsed and the body 98 is in its horizontal or lowered pos tion. In this position of the body the horizontal wings of sale angle irons 95,

that the section of the traction members wings of the angle irons rest upon the upper edges of the frame members'lfl, 10, their vertical wings extending downwardly along the faces of said side members 10, 10. Shorter angle irons 95, 95 extend a certain distance along said angle irons 92, 92 and are secured by" their vertical wings to the vertical wine: of said angle irons 92 by fiatheaded riv 23, Fig. 4. The horizontal 95 form guide rails for rollers 96, mounted in the free ends of the lifting arms 84, and for the rollers 76 of the longer arms 70, 70.

The long lifting arms 70 will preferably be braced, Fig. 4-, by diagonally disposed bracing rods and the traction members 60, when the body is in its lowered position, will preferably extend over the flanged rollers 80 located at the angle of said lifting arms as above described, in such manner extending between said rollers 80 and the free ends of the arms 70 shall pass in relatively close proximity to the axis of the rollers 96 mounted in the free ends of the shorter lifting arms 84.

It will be understood, of course, that the body 98 is secured to the longitudinal angle irons 92 in any suitable manner so as to tilt therewith. 95

The operation of the construction so far described is as-follows: If the motor be started and the clutches connecting the transverse shaft 16 with the crank shaft of the motor be thrown in, the said shaft 16 100 will through the sprocket wheel 18, sprocket chain 34, sprocket wheel" 32land gears 40,

42, 5t and 56, rotate the shaft 58 and wind thereon the chains 60. At the beginning of this operation, the rollers 96 np the free ends of the shorter lifting arms :4 are respectively in contact with the under sides of the horizontal portions of the angle iroiis 95 while the rollers 76 on the free ends of the longer lifting arms 70 are out of contact with said angle irons, as shown in F i 2.

.As the chains 60 are wound upon the s aft 58, the traction thus exerted on the free ends of the longer liftii g arms 70 will swing said lifting arms upwardly about their iivots 74. This will raise the pivotal points 8 of the arms 70 and 84 and will thus cause the shorter lifting arms 84 also to swing upwardly about their lower ends, owing to the connection of said lower ends at 86 to the arms 88. The initial raising or tilting of the body 98 about its pivotal points 94 is thus eli'ected by the more effective rollers 83,

83 inidrollcrs 96, 96 on the shorter lifting arms 84, and us the traction members 60 extend in close proximity to the axis of the rollers 83 and 96, it will be seen that these rollers that is to say, the points of application of the lifting force to the body are substantially on the straight line along which the tractional force is exerted, said force being thus applied in the most effective manner and at the most effective point. As the shaft 58 continues to wind up the chains 60, the ion arms 70 gradually swing upwardly by t e rollers 96 of the arms 84, and the rollers 76 on the free ends of the arms 70 now themselves engage the lower surface of the horizontal portlons of the angle irons 9595 and continue the lifting action as the rollers 96 cease their lifting action. It will be seen that during the lifting action of the rollers 76, the tractional force is applied directly at said rollers,that is to say, at the points Where the arms 70 exert their lifting action on the body to be lifted. The lifting action may be continued until the desired inclination or elevation of the body has been attained when the motor may be stopped or the clutch thrown out to arrest thebody in the position desired. A pawl and ratchet maybe provided on the shaft 40,'for example, to maintain the body in its lifted position. When it is desired to lower the body, this pawl is thrown out and the lowering movement controlled by the brake 52, as already described.

By making the angle of the shorter lifting arms 84 more acute so as to lower the rollers 90 somewhat when the parts are assembled, the rollers 83 will exert the initial lifting action, the rollers 96 becoming operative later and finally the rollers 76.

It is sometimes desirable to raise the rear end of'the body as well as the forward end,

but to a lesser degree, so as still to preserve a tilted position of the body toward the rear of the machine when the ody has been raised to the desired height. As an instance where it is convenient to raise the rear end of the body in this manner may be cited the case where it is necessary to use a chute to convey the material to be dumped from the body to the place where it isto be de posited, and it is necessa to use so long a chute that the necessary 1IlOllI1fltl0Il ,0f the latter cannot be obtained. To meet such a contingency, the present invention may comprise means for raising the rear end of the body in the manner referred to. To this end, an arm 102 may be pivoted at one end upon each of the ivots 90, 90, each arm 102 being provid at its free end with a roller 104. Adjacent the free end of each of the arms 102 is pivoted at 108 the free end of a rod 106, and tothe lower end portion of each of the rods 88, 88, is pivoted the free end of a rod 107, the rods 106, 107 being located one behind 'the other in a horizontal plane, each rod 106 being provided with a collar 106 which embraces the coiiperating rod 107 and each rod 107 being provided with a collar 107' which embraces the cotiperating rod 106. A series of holes may be provided in one of the rods 106, 107,

for example, one such hole being shown at 111, Fig. 2, said holes being adapted to receive a locking pin of any suitable construction. The arms 102 may also be braced by diagonal rods, not shown, extending from one to the other, substantially similar in arrangement to the rods 100 which act as braces for the lifting arms. The points of connection of these bracing rods to the arms 102 are shown at 110 in Figs. 2 and 3.

With the body of the vehicle in its lowcred position, as shown in Fig. 2, the arms 102 occupy the positionshown in said figure, and if no pin be inserted in the holes 111, then, as the lifting arms swing upwardly in raising the front end of the body, the pivot 78 moves toward the rear of the mechine and the lower ends of the. arms 88, owing to their connection with the lower ends of the arms 84 will be swung downwardly and toward the rear of the machine, thus simply causing the rods 106, 107 to telescope without moving the arms 102. But if a pin be inserted in the holes 111 of the rods 106, 107 while thebody is still in lowered position, then the rods 106, 107 will be locked and cannot telescope, and as the lower end of the arms 88, 88 are moving toward the rear of the'machine in the lifting operation, as above described, the two sets of rods 106,107 will raise the arms 102,

as shown in dotted lines, Fig. 3, and at a certain point in the lifting movement of the body, the rollers 104 on the free ends of said arm 102 will thus come in contact with the under surface of the body proper 98 at each side and near the rear end thereof, and as, when this construction for raising the rear end of the body is used, said body is not rigidly secured to the angle irons 92 but is merely pivoted thereto at its front end, as shown in Fig. 1, at 112, the body will, in the further lifting movement be tilted upwardly about this ivotal connec tion 112, the elevation of t 0 rear end of the body, however, being less than that of the forward end, so that the body will still ward the rear of the machine, as shown in dotted lines in Fi 3.

If desired, hoo -shaped braces 114- socured to the front transverse frame member 14 may be provided to embrace the shaft 58 intermediate its two end bars to give the latter additional support against the strain exerted thereon by the traction members 60. The shaft 36 may have a squared end, as shown inFig, 1, to enable the apparatus to be operated y hand if desired.

When the construction above described for liftin the rear end of the body is used, means wi (preferably be provided to steady the rear on of the body. This means may comprise guiding or stay members 116 secured in any suitable manner, one to the outside of each of the side frame members 10 and projecting above the upper edge of the latter so as to embrace the rear end of the bottom of the body between them when the rear end of the body is in its lowered position.

The lifting and tilting mechanism eonstructed in accordance with the present invention possesses many advantages over those heretofore used. Among other ad vantages, for example, it may be stated that the mechanism is extremely simple, not liable to get out of order, extreme y rapid in operation and secures a maximum lifting force with a minimum expenditure of power, extremely heavy loads being quickly and easily handled,

It will be apparent that it is not essential that all the f atures of the invention be used conjointly, but that they might be used to advantage separately in various combina tions and subcopibinations. It will also be understood that, although described as embodied in the details illustrated, the invention is not to be understood as circumscribed by or limited to said details or any of them, biit that the construction may be variously modified without departing from the true scope of the invention which is definitely set forth by the claims.

(llaims:

1. In a load handling apparatus, in combination, a suitable support; a load supporting body normally resting on said support; a pair of guide rails secured to said body; a pair of angular lifting arms, pivoted at one end for swinging movement; roller mounted at the free end of each of said lifting arms and adapted to cooperate with said guide rails; a serond pair of ai'igular l fting arms, earh arm of said pair being pivoted at one end for swinging movement upon said support; a roller mounted at the free end of eatfh of said second pair of lifting arms and adapted to cooperate with said guide rails; a pair of traction members operatively connected to one of said pairs of lifting arms; a shaft upon which said traction members are adapted to be wound; and means to drive said shaft to wind said traction meIn-y bers thereon. V v I V 2. In a load handling apparatus, in combination, a suitable support; a framepivoted thereto and normally resting thereon; a body pivoted to said frame and normally resting on the latter; guide rails on said frame; a pair of lifting arms, each arm of said pair pivoted at one end upon said support; a roller mounted at the free end of each one of the arms of said pair and adapted to cooperate with the guide rails on said frame; a second pair of lifting arms pivotallyconnerted intermediate their ends to said first pair of lifting arms; a pair of collapsible members, each member of said pair having one end pivotally connected to one end of adapted to cooperate with said guide rails on said frame; a third pair of lifting arms; each arm of said pair having one end pivotally connected to said frame and the other end pivotally connected to the other end of one of said collapsible members; a roller mounted at the free end of each arm of said third pair of lifting arms and adapted to cooperate with said body; a pair of traction members operatively connected to said firstnained pair of lifting arms; a shaft u on which said traction members are adapte to be wound; and means to drive said shaft to wind said traction members thereon.

5. vln a. load handling apparatus, in combination, a suitable support; a load supporting body normally resting on said support; a pair of guide rails secured to said body; a pair of angular lifting arms, pivoted at one end for swinging movement; a roller mounted at the free end of each of said angular lifting arms and adapted to cooperate with said guide rails; a second pair of angular lifting arms, each arm of said pair being pivoted at one end upon said support; a roller mounted at the free end of each of said second pair of lifting arms and adapted to cooperate with said guide rails; a pair of traction members operatively connected to one of said pairs of lifting arms; guide sheaves for said traction members; a shaft upon which said traction members are adapted to be wound; and means to drive said shaft to wind said traction members thereon.

i. in a load handling apparatus, in combination, a suitable support; a tiltable load supporting body normally in lowered position on said support; a pair of guide rails secured to said body; a pair of angular lifting arms, pivoted at one end for swinging movement; a roller mounted at the free end of each of said lifting arms and adapted to cooperate with said guide ails; a second pair of angular lifting arms, each arm of said pair being longer than the arms of'said one arm pivotally connected to one of said two first-named parts and the other, longer arm to cotiperate With the other of said two first-named parts to raise the'forepart of said body, when said angular lifting member is actuated; a traction member connected to said longer arm of said angular lifting member; means to operate said traction member to actuate said angular lifting member and rear part raising mechanism, said traction member extending, during a portion at least of the operation of said angular lifting memher, longitudinally of the longer arm of said angular lifting member from its connection with said arm to the junction of the two arms of said angular lifting member and thence to the traction member operating means; and means to render said rear part raising mechanism operative or inoperative at will.

11. In a dumping vehicle, in combination, a load carrying dumping body adapted to be tilted to dump its load; a suitable support for said load carrying dnmping body; angular lifting arms 70 ivotally connected at one end to one of said two first-named parts and adapted to swing about said pivotal connections and act through anttfriction rollers 76 upon the other of said two first-named parts to raise the forepart of said body; further angular lifting arms 84 pivotally connected intermediate their ends to said first-named angular lifting arms 70 and connected at one of their ends to one of said two first-named parts, said angular lifting arms 84 being adapted to swing about their connections to act n on the other of said two first-named parts tirongh antifriction rollers 96 to raise the forcpart of said body; traction members and winding means therefor, said traction members being connected to the free ends of said angular lifting arms and extending, during a portion at least of the operation of said angular lifting arms, fro their point of connection therewith to the angle of said angular lifting arms and thence to said winding means.

12. In a dumping vehicle, in combination, a load carrying dumping body acla ted to be tilted to dump its load; a suitab e support for said load carrying dumping body; angular lifting arms 70 ivotally connected at one end of one of said two first-named parts and adapted to swing about said piv to said first-named angular lifting arms 70 v and connected at one of their ends to one of saiitWo first-named parts, said angular lifting arms 8-1 being adapted to swing about their connections to act upon the other of said two first-named parts through anti-friction rollers 96 to raise the forepart of said body; traction members (30 and winding means therefor, said traction members being connected to the free ends of said angular lifting arms 70 and extending, during a portion at least of the operation of said angular lifting arms, from their point of connection therewith to the angle of said angular lifting arms and thence to said winding means; rear part lifting arms 102; and means connecting said rear part lifting arms with said forepart lifting arms to cause the former to be operated by the latter.

13. In a dumping vehicle, in combination, a load carrying dumping body adapted to he tilted to dump its load; a suitable support for said load carrying dumping body; angular lifting arms 70 pivotally connected at one end to one of said two first-named parts and adapted to swing about their ivotal connections and act through antiriction rollers 76 upon the other of said two first-named parts to raise the forepart of said body; traction members 60 and winding means therefor, said traction members being connected with the free ends of said angular lifting arms and extending, during a portion at least of the operation of said angular lifting arms, from their point of connection therewith to the angle of the arms and thence to said winding means; rear part lifting arms 102; means .connecting said real part lifting arms with said forepart lifting arms to cause the former to be operated by the latter; and means to render said connections operative or inoperative at will.

In testimony whereof, I have name to this specification, in the two Subscribing witnesses.

GUSTAF KELLGREN,

signed my presence of Vitnesses:

llnn'rim DAVID, Sloan) GUBrrz. V 

